Use two --verbose flags as a [TRACE] log level

src/cli.rs

@@ -82,9 +82,9 @@ pub struct Args {
     #[arg(long, value_delimiter = ',')]
     toolchains: Vec<String>,
 
-    /// Turn verbose information on
-    #[arg(short, long)]
-    pub verbose: bool,
+    /// Enable DEBUG logs (use twice for TRACE logs)
+    #[arg(short, long, action = clap::ArgAction::Count)]
+    pub verbose: u8,
 }
 
 impl Args {

src/fingerprint.rs

@@ -1,5 +1,6 @@
 #![allow(deprecated)]
 use anyhow::{bail, Context, Error};
+use log::trace;
 use log::{debug, info, warn};
 use serde_derive::Deserialize;
 use serde_json::from_str;
@@ -94,7 +95,7 @@ fn load_all_fingerprints_built_with(
             }
         }
     }
-    debug!("Hashs to keep: {:#?}", keep);
+    trace!("Hashs to keep: {:#?}", keep);
     Ok(keep)
 }
 
@@ -156,7 +157,7 @@ fn load_all_fingerprints_newer_than(
             }
         }
     }
-    debug!("Hashs to keep: {:#?}", keep);
+    trace!("Hashs to keep: {:#?}", keep);
     Ok(keep)
 }
 

src/main.rs

@@ -25,11 +25,11 @@ use self::stamp::Timestamp;
 use self::util::format_bytes;
 
 /// Setup logging according to verbose flag.
-fn setup_logging(verbose: bool) {
-    let level = if verbose {
-        log::LevelFilter::Debug
-    } else {
-        log::LevelFilter::Info
+fn setup_logging(verbosity_level: u8) {
+    let level = match verbosity_level {
+        0 => log::LevelFilter::Info,
+        1 => log::LevelFilter::Debug,
+        2.. => log::LevelFilter::Trace,
     };
 
     let isatty = std::io::stdout().is_tty();